String type: complete migration to bitwise position
[babeltrace.git] / types / string.c
1 /*
2 * BabelTrace - String Type Converter
3 *
4 * Copyright (c) 2010 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20
21 #include <babeltrace/compiler.h>
22 #include <babeltrace/align.h>
23 #include <babeltrace/types.h>
24
25 void string_copy(struct stream_pos *dest, const struct format *fdest,
26 struct stream_pos *src, const struct format *fsrc,
27 const struct type_class *type_class)
28 {
29 struct type_class_string *string_class =
30 container_of(type_class, struct type_class_string, p);
31
32 if (fsrc->string_copy == fdest->string_copy) {
33 fsrc->string_copy(dest, src, string_class);
34 } else {
35 unsigned char *tmp = NULL;
36
37 fsrc->string_read(&tmp, src, string_class);
38 fdest->string_write(dest, tmp, string_class);
39 fsrc->string_free_temp(tmp);
40 }
41 }
42
43 void string_type_free(struct type_class_string *string_class)
44 {
45 g_free(string_class);
46 }
47
48 static void _string_type_free(struct type_class *type_class)
49 {
50 struct type_class_string *string_class =
51 container_of(type_class, struct type_class_string, p);
52 string_type_free(string_class);
53 }
54
55 struct type_class_string *string_type_new(const char *name)
56 {
57 struct type_class_string *string_class;
58 int ret;
59
60 string_class = g_new(struct type_class_string, 1);
61 string_class->p.name = g_quark_from_string(name);
62 string_class->p.alignment = CHAR_BIT;
63 string_class->p.copy = string_copy;
64 string_class->p.free = _string_type_free;
65 if (string_class->p.name) {
66 ret = ctf_register_type(&string_class->p);
67 if (ret) {
68 g_free(string_class);
69 return NULL;
70 }
71 }
72 return string_class;
73 }
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